|This is Kari Ann, greetings from the Critique Club:
composition: The lower right sand dollar is a little too close to the edge of the frame, moving a little could have helped that. But, the rest of the dollars are positioned really well in frame.
color: nice, neutral and soft colors, reminds me of the beach.
contrast: very nice contrast, just enough to make them stand out against the sand.
focus: I don't know if the bit of blur was intentional or not. If it was, I quite like the effect it gives, like being underwater. But some people loathe blur like this, so maybe that's were a few of the lower votes came from.
depth of field: great use of depth of field, with only one sand dollar in focus, i see its beautiful details.
lighting: very nice, i love lighting underwater, its so magical.You captured it well.
other: i like this image, but there is just something 'off' about it. i don't know if its just the effect of the glass between the water and the lens, but it looks so surreal. also, the obstruction in the lower left side of the image is distracting. I hope to see more work from you, and you have improved over the course of your stay here at DPC, so don't give up! If you have any more questions, feel free to PM me whenever you like.